A linux C API function that repositions the offset of the open file associated with the file descriptor to the argument offset according to the directive.
Questions tagged [lseek]
81 questions
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votes
1 answer
Trouble working with file using lseek() read() and write()
i'm working on C in my university, i'm at the beggining working with buffers and this function so apolagize my lack of knowledge that i might show.
I gotta do this project using lseek(), write() and read(). I wanted to read a file, and every letter…
César Pereira
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votes
1 answer
C - Read struct in file
Hi I want to read some information in a struct that i wrote in file with fwrite but there's a problem I can't extract these information. I got 2 file
tttfs.h :
#include
#include
#include
#include…
Jackie
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votes
3 answers
Why isn't lseek changing value? (C)
unsigned int file = open(argv[1], O_RDONLY);
printf("%u\n", file);
printf("%u\n", elf.offset);
lseek(file, elf.offset, SEEK_SET);
printf("%u", file);
OutPut:
3
52
3
Shouldn't file be set to 52?
csguy
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votes
1 answer
Java read file line by line to a specific seek position
I want to read a file line by file to a specified seek position. It is easy to start reading from a certain seek position and read further till end.
RandomAccessFile f = new RandomAccessFile("file.txt","r")
f.seek(seek)
This set file reading…
Shashwat Kumar
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votes
1 answer
Can't use lseek to add a space at the end of a file
I am trying to append some text to an already opened file. I'd like to append the pid number at the end of my file. For example: Lorem ipsum dolor sit amet orci aliquam. 14872. My code works fine except I am failing at making my program print the…
haunted85
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votes
3 answers
Getting a file's size in C with lseek?
I am trying to get the size of a file in C with the following operations... I am new to C
This is my struct mem at the top of my file:
struct mem {size_t size;
};
Is this the correct set up with local variables/return statements and…
Surz
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